# Japan Business Calendar

> Japanese business days, holiday checks and invoice due dates for your AI agent.

Remote MCP server (Streamable HTTP): https://jp-business-calendar-mcp.donniertf.workers.dev/mcp
Free tier: `next_holidays` — no key, no sign-up, 20 calls/day per IP.
Pro: ¥1200/month, cancel anytime — all tools, unlimited.

## Tools
- next_holidays (free): FREE. Next 3 Japanese public holidays and whether today is a business day.
- business_days (Pro): PRO. Add/subtract N Japanese business days from a date.
- due_date (Pro): PRO. Invoice due date: start + N calendar or business days.
- year_planner (Pro): PRO. Full holiday list from the dataset.

## Buying (agents)
1. POST https://jp-business-calendar-mcp.donniertf.workers.dev/checkout -> {checkout_url, session_id}. A human (or a payment-capable agent) completes Stripe Checkout at checkout_url.
2. GET https://jp-business-calendar-mcp.donniertf.workers.dev/token?session_id=... -> {access_token}.
3. Send Authorization: Bearer <access_token> to https://jp-business-calendar-mcp.donniertf.workers.dev/mcp (or pass access_token in tool arguments).

## Pay per call (x402, USDC on Base)
No account: POST JSON args to https://jp-business-calendar-mcp.donniertf.workers.dev/x402/<tool> -> HTTP 402 with payment requirements ($0.02 USDC per call, payTo 0x02226D28e0c85AE4AdDB7fe7043Dd2b1Ff710D41). Retry with an X-PAYMENT header (x402 v1, scheme exact, network base). Manifest: https://jp-business-calendar-mcp.donniertf.workers.dev/.well-known/x402. MCP clients may also send X-PAYMENT on tools/call.
Machine-readable pricing: https://jp-business-calendar-mcp.donniertf.workers.dev/pricing.json · Server card: https://jp-business-calendar-mcp.donniertf.workers.dev/.well-known/mcp

## Sources
- holidays-jp API based on Cabinet Office schedules

## Notes
Business-day maths using Japanese national holidays (holidays-jp). Does not include company-specific or bank half-days.
Contact: dmorrisonwebdesign@gmail.com. More UK data MCPs: https://github.com/donniertf-hub/uk-mcp-fleet